Expressing obligation, advice, lack of obligation and prohibition

This unit we must deal with the ways of expressing obligation and necesssity, advice, lack of obligation or necessity and prohibition. For this, we'll revise modal verbs and have to, need to and needn't (remember that not all of them are modal verbs!), so in order to have all the information about them, check the slides and do the activities. Modal verbs

Modal verbs from Míriam

Modal verbs Sentence correction